调试视图层次结构不呈现UI [英] Debug view hierarchy does not render UI

问题描述

我正在尝试使用xcode 6上的视图层次结构功能来查看应用程序的可拖动布局，但是我得到的只是一个空白区域.

i'm trying to use the view hierarchy feature on xcode 6 to see the draggable layout of my app, but all i get is a blank area where it should be.

尝试了SO和其他地方的许多建议后，没有任何效果.

after trying out lots of suggestions from SO and other places, nothing works.

我已经在有或没有断点，不同的SIM设备，不同的应用程序的情况下运行了sim卡，但是没有任何效果.

I have had the sim running with or without break points, different sim devices, different apps, but nothing works.

我知道您只是应该在模拟应用程序时单击按钮，并且应该弹出该按钮，但是当我这样做时，带有按钮和选项的主界面以及调试中的所有元素都将加载航海家.而不是3d UI本身.

I know you're just supposed to click on the button while the app is being simulated and it's supposed to pop up, but when i do it the main interface with the button and options load along with all the elements in the debug navigator. just not the 3d UI itself.

感谢任何提示.

推荐答案

似乎也遇到了我最近遇到的问题.当我按下按钮时，我会得到一个断言失败:

There seems to be a recent issue as well which I've run into. When I press the button, I get an assertion failure:

-[UITextView _firstBaselineOffsetFromTop]中的断言失败

Assertion failure in -[UITextView _firstBaselineOffsetFromTop]

有一个此处的OpenRadar ，其中的一种变通办法是为我在其中附加无用"约束ViewController.m:

There's an OpenRadar here with a workaround which worked for me of attaching a "useless" constraint" in ViewController.m:

if ([NSLayoutConstraint respondsToSelector:@selector(activateConstraints:)]) {
    TEXTVIEWNAME.translatesAutoresizingMaskIntoConstraints = NO;
    [NSLayoutConstraint activateConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|-[TEXTVIEWNAME]-|" options:0 metrics:nil views:NSDictionaryOfVariableBindings(TEXTVIEWNAME)]];
}

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